mech252
Harmless
Posts: 3
Registered: 27-2-2019
Member Is Offline
|
|
How can i extract elemental mercury from mercury(II) iodide?
|
|
|
Corrosive Joeseph
National Hazard
Posts: 915
Registered: 17-5-2015
Location: The Other Place
Member Is Offline
Mood: Cyclic
|
|
Seriously..............? This is like putting the cart before the horse............ Why not order some tilt switches from China via eBay.
/CJ
Being well adjusted to a sick society is no measure of one's mental health
|
|
|
mech252
Harmless
Posts: 3
Registered: 27-2-2019
Member Is Offline
|
|
Because i can get a lot of mercury iodine for fairly cheap (much cheaper than switches). Also one switch contain only very little mercury and i would
need to break a lot of them to get usefull amount of mercury.
|
|
|
fusso
International Hazard
Posts: 1922
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
Member Is Offline
|
|
Have you calculated the price per mol of Hg from both sources? Is the HgI2 really cheaper than switches in $/mol?
|
|
|
Ubya
International Hazard
Posts: 1232
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
mercury (II) iodide is barely soluble in water, but if you add enough KI or NaI you can solubilize it as the tetraiodomercurate ion, and maybe (need
fact checking) with electrolysis you can get mercury metal and elemental iodine
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
DraconicAcid
International Hazard
Posts: 4278
Registered: 1-2-2013
Location: The tiniest college campus ever....
Member Is Offline
Mood: Semi-victorious.
|
|
Quote: Originally posted by Ubya  | | mercury (II) iodide is barely soluble in water, but if you add enough KI or NaI you can solubilize it as the tetraiodomercurate ion, and maybe (need
fact checking) with electrolysis you can get mercury metal and elemental iodine |
Once you've got it in solution, it shouldn't be hard to reduce it to the metal with aluminum or another metal.
Part of me wants to make a joke about mixing the solid with aluminum powder and doing a thermite-like reduction, but the sensible part of me is too
worried that someone might try it.
Please remember: "Filtrate" is not a verb.
Write up your lab reports the way your instructor wants them, not the way your ex-instructor wants them.
|
|
|
unionised
International Hazard
Posts: 5102
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
I'm fairly sure that an alkaline solution of mercury iodide in KI can be reduced by formaldehyde or acetaldehyde.
That avoids the addition of any other metals.
|
|
|
Chem Science
Hazard to Others
Posts: 122
Registered: 30-7-2018
Location: Argentina
Member Is Offline
|
|
Try adding some nitric acid, these will make iodine and mercury nitrate. Then the mercury nitrate can be converted to mercury by decomposition
Hg(NO3)2 = Hg + 2NO2 + O2
I did these for lead iodide and it worked !
|
|
|
Ubya
International Hazard
Posts: 1232
Registered: 23-11-2017
Location: Rome-Italy
Member Is Offline
Mood: I'm a maddo scientisto!!!
|
|
| Quote: Originally posted by Chem Science | Try adding some nitric acid, these will make iodine and mercury nitrate. Then the mercury nitrate can be converted to mercury by decomposition
Hg(NO3)2 = Hg + 2NO2 + O2
I did these for lead iodide and it worked ! |
i would just displace the mercury ion with copper metal, no need to work with mercury vapour and copious amounts of NO2
---------------------------------------------------------------------
feel free to correct my grammar, or any mistakes i make
---------------------------------------------------------------------
|
|
|
fusso
International Hazard
Posts: 1922
Registered: 23-6-2017
Location: 4 ∥ universes ahead of you
Member Is Offline
|
|
| Quote: Originally posted by Ubya | | Quote: Originally posted by Chem Science | Try adding some nitric acid, these will make iodine and mercury nitrate. Then the mercury nitrate can be converted to mercury by decomposition
Hg(NO3)2 = Hg + 2NO2 + O2
I did these for lead iodide and it worked ! |
i would just displace the mercury ion with copper metal, no need to work with mercury vapour and copious amounts of NO2 |
I'd use Fe instead of Cu as Fe is insoluble in Hg if I want to use displacement.
|
|
|
Abromination
Hazard to Others
Posts: 432
Registered: 10-7-2018
Location: Alaska
Member Is Offline
Mood: 1,4 tar
|
|
No offense OP, but if you need to ask questions like this then perhaps working with toxic mercury salts is not the best of ideas. Please consider
finding a different source. If you are a confident chemist, I suppose go ahead but if you doubt your capability, don't.
List of materials made by ScienceMadness.org users:
https://docs.google.com/spreadsheets/d/1nmJ8uq-h4IkXPxD5svnT...
--------------------------------
Elements Collected: H, Li, B, C, N, O, Mg, Al, Si, P, S, Fe, Ni, Cu, Zn, Ag, I, Au, Pb, Bi, Am
Last Acquired: B
Next: Na
-------------- |
|
|
Lion850
National Hazard
Posts: 514
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Hi mech252 did you manage to extract mercury from your iodide?
|
|
|
Corrosive Joeseph
National Hazard
Posts: 915
Registered: 17-5-2015
Location: The Other Place
Member Is Offline
Mood: Cyclic
|
|
The OP was last seen one month after the first post.....He was only here for a total of 3 posts over a period of 4 weeks. His email address is in his
profile but I don't believe he was succesful.
/CJ
Being well adjusted to a sick society is no measure of one's mental health
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
